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Microbiology- Exam 1
Chapters: 1,12,2,8
18
Biology
Undergraduate 3
09/17/2015

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Term
Which bacterial trait is NOT useful for experiments in evolution?
Definition
Bacteria have the ability to use multiple carbon resources.
Term


(Blank) occur at greater frequency than (blank) in microbial genes:

 

Definition
Deletions & Insertions
Term
The long term E. coli evolution (LTEE) experiment tracked E.coli for more than (blank) generations
Definition
50,000
Term
T/F: Whereas prokaryotes contain 16S rRNA genes, eukaryotes instead contain 20S rRNA genes.
Definition
FALSE
Term
What is a major challenge of the molecular clock approach?
Definition
DNA sequences can change at different rates.
Term
For which purpose is it most appropriate to use univerwsaql 16S rRNA primers?
Definition
to sequence 16S rRNA from all prokaryotes in a sample.
Term
The 16S rRNA gene encodes for a(n)
Definition
16S rRNA
Term
For phylogenetic studies, which characteristics is NOT a reason why SSU rRNA gene sequences are favored over other nucelotide sequences?
Definition
completely conserved
Term
Which was likely the host cell during primary endosymbiosis?
Definition
an archaeon
Term
BOTH hypotheses on the origins of eukaryotes agree that
Definition
eukaryotic cells are chimera with attributes of Archaea and Bacteria.
Term
Mitochondria in Eukarya originated from
Definition
Proteobacteria
Term
What gennomic DNA-DNA hybridization MOST commonly used for?
Definition
distinguishing closley related genomes
Term
True or False: Fimbriae and pili are both composed of proteins.
Definition
True
Term
Which is the ONLY group of microorganisms that contain lipopolysaccharides (LPS)
Definition
gram negative bacteria
Term
Which structure is involved in the genetic (conjugation) between cells?
Definition
pilus
Term
How are teichoic acids bound within peptidogylcan?
Definition
covalent bonding to muramic acid
Term
Which structural components allow for motility in Escherichia coli?
Definition
petritichous flagella
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